Showing structure for 2-hydroxy-7-{2-hydroxy-4,9-dimethyl-13-methylidene-5-oxo-6-oxatetracyclo[7.4.0.0³,⁷.0¹⁰,¹²]tridec-3-en-7-yl}-4,9-dimethyl-13-methylidene-6-oxatetracyclo[7.4.0.0³,⁷.0¹⁰,¹²]tridec-3-en-5-one